# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html

# Sets the minimum version of CMake required to build the native library.

cmake_minimum_required(VERSION 3.18.1)

# Declares and names the project.

project("ffmpeg")

# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.

add_library( # Sets the name of the library.
        ffmpeg

        # Sets the library as a shared library.
        SHARED

        # Provides a relative path to your source file(s).
        NativeAPI.cpp
        FFmpeg.cpp
        )

# Searches for a specified prebuilt library and stores the path as a
# variable. Because CMake includes system libraries in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.

find_library( # Sets the name of the path variable.
        log-lib

        # Specifies the name of the NDK library that
        # you want CMake to locate.
        log)

# 添加自定义库 @{
# 1、添加一个库，在这里可以理解为声明了一个变量，来承载需要引入的库
add_library(
        avcodec # 表示的是模块名称，可以自己任意取
        SHARED # 这个是固定的，基本上表示共享库
        IMPORTED # 这个也基本上是固定的，表示当前是导入的，跟我们 java 的 import 差不多含义
)

# 2、将第一步声明的库名称(libraryname)，跟具体的库关联到一起
set_target_properties(
        avcodec # 库的名称
        PROPERTIES IMPORTED_LOCATION # 表示当前库是导入的方式
        ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libavcodec.so # so 动态库的具体路径
)

add_library(avfilter SHARED IMPORTED)
set_target_properties(avfilter PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libavfilter.so)

add_library(avformat SHARED IMPORTED)
set_target_properties(avformat PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libavformat.so)

add_library(avutil SHARED IMPORTED)
set_target_properties(avutil PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libavutil.so)

add_library(postproc SHARED IMPORTED)
set_target_properties(postproc PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libpostproc.so)

add_library(swresample SHARED IMPORTED)
set_target_properties(swresample PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libswresample.so)

add_library(swscale SHARED IMPORTED)
set_target_properties(swscale PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libswscale.so)

add_library(x264 SHARED IMPORTED)
set_target_properties(x264 PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../../../libs/arm64-v8a/libx264_164.so)

include_directories(${CMAKE_SOURCE_DIR}/../../../libs/include)
# 添加自定义库 @}

# Specifies libraries CMake should link to your target library. You
# can link multiple libraries, such as libraries you define in this
# build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( # Specifies the target library.
        ffmpeg

        # Links the target library to the log library
        # included in the NDK.
        ${log-lib}

        # Media Ndk
        mediandk

        # bitmap Ndk
        jnigraphics

        # FFmpeg
        x264
        avcodec
        avfilter
        avformat
        avutil
        postproc
        swresample
        swscale)
